There doesn’t seem to be an official answer as to where to set your system wide JAVA_HOME in Linux, at least I haven’t found one (looked on Oracle website and some google fu).
Many forums and comments point at setting it in /etc/profile or even /etc/bashrc/ (or /etc/bashrc.bashrc) but on my system both these files headers are quite specific about creating
“a custom.sh shell script in /etc/profile.d/ […] as this will
prevent the need for merging in future updates.”
instead of directly modifying the files.
For this reason I’m thinking the custom.sh shell script placed in /etc/profile.d is the way to go but I might be missing something hence this question =)
Please forgive me if I missed an official doc and just post the link!
You pretty much answered your own question with the paragraph beginning “For this reason…”. The only time I edit
/etc/profileis when I’m changing some value in it (rather than adding something).When adding various software packages which require changing user profiles, most distros add an appropriate script to the
/etc/profile.ddirectory, and the base-installed/etc/profilescript has a call to all executable scripts in that directory. (Likewise, upgrading/removing the distro-provided package will have the script in the subdirectory modified or removed.)